Does anyone own "The Moral Landscape"?

[vulcanlogician]

Then say so.

I can't attack a position I don't understand. So if there's some sort of fifth kind of moral skepticism, then I'd need exposition there.

Is there a position that claims that the whole subject is so poorly defined that it becomes next to useless?

Error theory. It calls all moral thinking and moral philosophy bullshit.

What exactly in ethics is poorly defined?